Louth-based HM Plant Honda have named Michael Laverty and Jon Kirkham as their riders for the 2012 British Superbike Championship.
Ulsterman Laverty, 30, took two victories for Swan Yamaha in 2011 and was fifth in the standings as his team-mate Tommy Hill won the title.
Kirkham, 27, rode for Crescent Suzuki last season and claimed his first BSB victory on his way to seventh overall.
In Superstock 1000 Gary Johnson has joined Jason O'Halloran in the team.
Team boss Havier Beltran said: "All four have great natural racing ability and proven credentials, but all of them also very much have the potential to go even further and have things they want to prove in their respective championships."